Abstract: According to one embodiment, an illumination device including a light source unit including a light-emitting element having a light-emitting surface, a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface, a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface, an optical member located between the light source unit and the wavelength conversion member and including a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface, and a lightguide opposed to the wavelength conversion member.

Abstract: Disclosed are an optical member, a display device having the same, and a method of fabricating the same. The optical member includes a receiving part having an empty space therein, a host in the receiving part, a plurality of wavelength conversion particles in the host, a sealing part in the receiving part, and a pre-treatment layer between the sealing part and an inner surface of the receiving part.

Abstract: Provided is a circuit board including: a support substrate; a plurality of light emitting devices mounted on the support substrate; and a device protection portion surrounding one of the light emitting devices, or three or more surfaces of the plurality of light emitting devices.

Abstract: An OLED display includes a first substrate, a first electrode on the first substrate, a pixel defining layer having a first aperture exposing the first electrode, an organic light emitting layer on the first electrode, a second electrode on the organic light emitting layer, a second substrate disposed to face the first substrate, a black matrix disposed on the second substrate and having a second aperture, and a lens disposed to cover at least a part of the second aperture and protruding toward the first substrate.

Abstract: A luminous glazing unit includes a glass substrate, an additional element that is tinted an optical isolator between the glass substrate and the additional element, a light source, optically coupled to the glass substrate, and a light-extracting device associated with the glass substrate. The optical isolator includes a low-index film, made of fluoropolymer-based material which: has a refractive index n2 at 550 nm such that n1-n2 is at least 0.08, has a thickness e2 of at least 600 nm, is in optical contact with the first main face by a first lamination interlayer, based on a thermoplastic material.

Abstract: A backlight device includes LEDs, a light guide plate, an LED board, and a light blocking portion. The light guide plate includes a side surface configured as a light entrance surface through which light from the LEDs enters and a plate surface configured as a light exit surface through which light exits the light guide plate. The LED board on which the LEDs are mounted and at least a portion of which is a light guide plate overlapping portion is on a light exit surface side. The light guide plate overlapping portion overlaps a light entering edge portion that is an edge portion of the light guide plate close to the light entrance surface. The light blocking portion is at the light guide plate overlapping portion of the LED board and between the light guide plate overlapping portion and the light entering edge portion of the light guide plate.

Abstract: In an illumination device of the invention, as an arrangement interval of light deflection elements in a first direction discontinuously varies, an arrangement interval in a first direction becomes small with increased distance from an incidence face, where one of regions adjacent to each other which is close to the incidence face is referred to as a first region, the other of the regions which is away from the incidence face is referred to as a second region, as the arrangement interval of the light deflection elements in a second direction discontinuously varies at a boundary between the first region and the second region, the arrangement interval of part of the first region which is closest to the incidence face is smaller than the arrangement interval of part of the second region which is closest to the boundary.

Abstract: A display device includes a display panel, a backlight unit outputting light to the display panel, and an optical member refracting or reflecting the light output from the backlight unit and providing the display panel with the light. The backlight unit includes a light source emitting the light, a light guide plate scattering the light emitted from the light source and irradiating the scattered light to a front surface of the backlight unit, a reflective sheet reflecting the light, which is irradiated to a rear surface of the light guide plate, to the light guide plate, a quantum dot sheet for converting the light, which is irradiated to the front surface of the light guide plate, into a white light, and a light-converting material provided on an edge portion of the reflective sheet to convert the light into the white light.

Abstract: A backlight unit and a display device are provided. The backlight unit includes: a circuit board (20); at least one light source (21) provided on the circuit board (20); a light guiding plate (112) comprising a light incident side, which is configured for receiving light emitted by the at least one light source, and a light exit side; and a diffusion plate (114) provided on the light exit side of the light guiding plate (112). The diffusion plate (114) includes a diffusion-plate body (141) and at least one diffusion-plate extension part (142) that is located on at least one side of the diffusion-plate body (141) and connected to the diffusion-plate body (141). The diffusion-plate extension part (142) is located between the circuit board (20) and the light guiding plate (112). A position of the diffusion-plate extension part (142) corresponds to a position of the light source (121).

Abstract: A liquid crystal display device includes a liquid crystal panel; a backlight unit disposed under the liquid crystal panel and including a light guide plate and a light emitting diode (LED) assembly at a side of the light guide plate; a main frame surrounding a side of the backlight unit and having a light-diffusion property.

Abstract: The present disclosure relates to the technical file of display, in particular to a side type backlight module, a method for producing the same and a display apparatus. The backlight module comprises: a LED source; a light guide plate; a wedge-shaped light guide portion located between the LED source and the light guide plate; two reflectors having reflective faces located on a top and a bottom of the wedge-shaped light guide portion and inclined with respect to an upper surface or a lower surface of the light guide plate, for adjusting the light emitting angle of the LED source; and a silicon gel part located between the LED source and the wedge-shaped light guide portion. With the inclined reflectors arranged on the top and the bottom of the silicon gel part, the present disclosure may avoid the light leak, improve the optical efficiency and suppress the light leak and hot spots effects of the light incident end of the light guide plate.

Abstract: The subject matter disclosed herein relates to an optical device comprising: a light guide film to transport light rays via total internal reflection; a first optical layer covering at least a portion of a first side of the light guide film, the first optical layer to receive an exiting portion of the light rays; a second optical layer covering at least a portion of the first optical layer; and a grating pattern located at an interface between the first optical layer and the second optical layer to out-couple light rays travelling in the light guide film, wherein the grating pattern is configured so that the exiting portion of the light rays transmit through the grating pattern twice before being total internally reflected by the grating pattern.

Abstract: An illuminating device includes a light source which outputs light, a light guide member having an incident surface on which the light from the light source is incident, an output surface through which the light is output from the light guide member, and a light deflection surface on which light deflection elements are formed such that the light is guided toward the output surface, and an isotropic light diffusion member positioned over the output surface of the light guide member. The light guide member has the incident surface extended in an X direction and includes a unit lens formed on the output surface and extended in a Y direction orthogonal to the X direction. A light-deflection element density D representing a number of the light deflection elements per unit area increases as the light deflection elements are positioned farther away from the incident surface.

Abstract: An illuminating airflow panel assembly is configured to provide illumination and allow air to flow therethrough. The illuminating airflow panel assembly may include a mounting bracket configured to secure the illuminating airflow panel assembly to a structure, and a main body connected to the mounting bracket. The main body may include opposed first and second planar surfaces and an outer peripheral edge. The main body may also include a plurality of airflow passages that extend from the first planar surface to the second planar surface. The airflow passages are configured to allow air to pass therethrough toward a target site. An illuminating member may be positioned around the outer peripheral edge of the main body. The illuminating member is configured to direct light toward the target site.

Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.

Abstract: A transfer molding method includes an insertion step of inserting a resin sheet between a first die and a second die, which are disposed opposite each other, a sandwiching step of sandwiching the resin sheet between the first and second dies while a transfer surface of a transfer member is brought into contact with at least one of surfaces of the resin sheet, and a transfer molding step of heating at least one of the first and second dies to melt at least a surface portion of the resin sheet with which the transfer surface of the transfer member is brought into contact, and exhausting residual air remaining in a recess through a groove portion connected to the recess when a thick portion is formed by the recess formed in the transfer surface.

Abstract: An optical touch device includes an indication plane, an image sensing unit, a light emitting unit and a frame. A sensing region is defined on the indication plane. The image sensing unit is disposed at a corner of the indication plane. The light emitting unit is disposed beside the image sensing unit and used for emitting light to the sensing region. The frame is disposed at one side of the indication plane. The frame includes two first inclined surfaces connected to each other and facing the sensing region.

Abstract: A front light (1) includes a light source (8), a light guide plate (9), and a plurality of dots (4) that are provided on a surface of the light guide plate (9), which surface faces a light exit surface of the light guide plate (9). Each of the plurality of dots (4) includes (i) a light reflective layer (2) for reflecting light toward the light guide plate (9), and (ii) a dark layer (3) for absorbing light, the dark layer completely covering the light reflective layer (2) so as to be in contact with the light guide plate (9) without any gap between the light guide plate (9) and the dark layer (3).

Abstract: A configuration is adopted in which an image sensor unit includes: a sensor substrate on which a plurality of photoelectric conversion elements are mounted; a light source that includes light-emitting elements and is for illuminating a document; a light guide that guides light from the light source from one end face in a longitudinal direction and linearly illuminates the document; a rod lens array imaging reflected light from the document on the sensor substrate; and a frame attaching each of these, and in which the frame detachably includes a spacer provided in proximity to the light source, and the spacer includes a light shield roof elongated so as to cover the light source and the end of the light guide.

Abstract: A light mixing module (3) for receiving light from a first set of light sources (4) and a second set of light sources (5), said light mixing module comprising: —an annular light guiding element (11), said annular light guiding element having an inner edge (13), a peripheral edge (12), a first intermediate surface (15) extending between said inner and peripheral edges and arranged to face said light sources, and a second intermediate surface (16) extending between said inner and peripheral edges opposite said first intermediate surface, wherein said inner edge (13) defines a cavity (18) with an opening arranged to face said light sources, wherein said opening is arranged to receive light from said first set of light sources (4) and said first intermediate surface (15) is arranged to receive light from said second set of light sources (5); and —a first reflective surface (17) arranged to close said cavity in an end opposite said opening so as to form a first mixing chamber (18), wherein said annular light guidi

Abstract: The present invention provides a positioning structure for light-guiding plate (LGP) and back frame, backlight module and liquid crystal display device thereof, wherein LGP disposed inside the back frame, first side inner wall of back frame disposed with a plurality of LEDs, second side inner wall adjacent to first side inner wall disposed with first magnetic body, a side of LGP corresponding to second side inner wall disposed with attachment body; first magnetic body and attachment body correspondingly attached, third side inner wall of back frame opposite to second side inner wall disposed with buffer plate, fourth side inner wall of back frame disposed with second magnetic body, a side of LGP corresponding to fourth side inner wall disposed with attachment body; second magnetic body and attachment body correspondingly attached. As such, back frame and LGP are firmly positioned and fixed to improve assembly yield arte.

Abstract: In at least some embodiments, a film for use with an edge-lit backlight includes a substrate. The film also includes a graphics layer and light-extraction features in contact with the substrate. The graphics layer and the light-extraction features are on opposite surfaces of the substrate.

Abstract: A backlight module is disclosed in the present invention. The backlight module includes a light guiding plate, a light source, a transformer and a constrainer. The transformer is disposed between the light guiding plate and the light source. The transformer is for transforming a first beam emitted from the light source into a second beam, so as to transmit the second beam to the light guiding plate, wherein a spectrum of the first beam is different from a spectrum of the second beam. The constrainer is connected to the light source for constraining a movement of the transformer. The constrainer includes a first fixing portion disposed on the light source and a second fixing portion connected to the first fixing portion, the second fixing portion being disposed on the transformer to fix the transformer relative to the light source.

Abstract: A liquid crystal display (LCD) device includes: an LC panel; a lamp disposed below the LC panel, for supplying light to the LC panel; a lamp housing having an opening, for encompassing and protecting the lamp; first and second diffusion reflection sheets disposed on end portions of inner lower and upper surfaces of the lamp housing, respectively; and a light guide plate disposed to be adjacent to the opening of the lamp housing, for guiding light emitted from the lamp to the LC panel.

Abstract: A light guiding plate and a light guiding device are provided, and the light guiding plate is implemented in the light guiding device. The light guiding device includes a side light source emitting light to the light guiding plate. The light guiding plate includes a first surface, a second surface and a third surface. The second surface is opposite to the first surface, and the third surface is adjacent to the first surface and the second surface. The second surface includes plural light guiding units, and each of the light guiding units includes a total reflection concavity and a light emitting convexity. The light emitting convexity surrounds the total reflection concavity.

Abstract: An optical thin film includes: a transparent substrate including a first surface and a second surface which is opposite to the first surface; a first light-condensing layer formed on the first surface of the transparent substrate, the first light-condensing layer having a haze value ranging from 5% to 30% and a surface roughness ranging from 0.1 RMS to 1 RMS; and a second light-condensing layer formed on the second surface of the transparent substrate. The second light-condensing layer has a haze value ranging from 70% to 100% and a surface roughness ranging from 1 RMS to 10 RMS.

Abstract: A backlight unit 24 includes a light guide plate 20, a heat dissipation member 36, a LED board 30, and LEDs 27 mounted on the LED board 30. The light guide plate 20 includes a light exit surface 20b on a front surface thereof, an opposite surface 10c on a rear surface thereof, a groove 20d in the opposite surface 20c, a light entrance surface 20d1 on one side surface in the groove 20d, and an opposite side surface 20d3 on another side surface in the groove 20d. The heat dissipation member 36 includes a portion in contact with the opposite side surface 20d3 and a portion on a side of one edge surface 20a of the light guide plate 20 with the one edge surface being opposite to the opposite side surface 20d3, the heat dissipation member 36 holding a part of the light guide plate 20 between the portions thereof. The light source board 30 is arranged on a surface that is opposite to a surface of the portion of the heat dissipation member 36 that is in contact with the opposite side surface 20d3.

Abstract: A display module has a display panel and a backlight module disposed on one side of the display panel. The backlight module includes a heat sink, a light bar, a light guide plate, a first reflective sheet, and a second reflective sheet. The light bar abuts against one side of the heat sink. The first reflective sheet is disposed adjacent to a bottom surface of the light guide plate, and the second reflective sheet is disposed adjacent to an edge of a light-emitting surface of the light guide plate. The second reflective sheet has a first part and a second part forming an included angle with the first part, the first part is attached to the heat sink or the light bar, and the second part overlaps a part of the light-emitting surface of the light guide plate.

Abstract: An optical sheet (optical member) includes: a sheet-shaped base material 40 that is light-transmissive; an anisotropic light condenser that is formed on the light-receiving surface of the base material where light is received, the anisotropic light condenser having light condensing anisotropy such that incident light is condensed in a light condensing direction along the light-receiving surface whereas light is not condensed in a non-light condensing direction along the light-receiving surface, the non-light condensing direction being perpendicular to the light condensing direction; and an anisotropic light scatterer that is formed on the light-emitting surface from which light is emitted, the light-emitting surface being on a side of the base material opposite to the light-receiving surface of the base member, the anisotropic light scatterer scattering and emitting light from the anisotropic light condenser, and having light scattering anisotropy where light is greatly scattered in the light condensing direc

Abstract: A method of protecting an LED chip from damage by ESD and EMI when the LED chip is housed in a light-emitting diode(s) housing package (LED package) and the LED package is mounted on a printed circuit board is provided. The method comprises a step of not including an ESD and EMI suppressing Zener diode within the combination of the printed circuit board and the LED package and of providing within the combination of the printed circuit board and the LED package a first conductive member and a spaced apart second conductive member which are electrically connected to the LED chip and which have defined between them at least one insulative ESD and/or EMI suppressing region which breaks down in its insulative properties when subjected to voltages of absolute magnitudes greater than a predetermined threshold voltage.

Abstract: A lighting device may be provided that includes: a body; a first light source and a second light source, which are disposed on the body and are disposed symmetrically with each other with respect to a central axis of the body; a first light guide unit which is disposed on the first light source and is coupled to the body; and a second light guide unit which is disposed on the second light source and is coupled to the body. The first light guide unit and the second light guide unit are disposed symmetrically with each other with respect to the central axis of the body.

Abstract: Embodiments of the invention provide a backlight source and a display device. An aperture is formed in a frame of the backlight source. A light guide plate in the backlight source is provided with a flank. The flank extends outwards through the aperture. The display device includes the backlight source, and a light transmitting region for transmitting light from the flank of the light guide plate is arranged on the side wall of the display device. The light emission of the side wall of the display device is realized, the application range of the backlight source is widened and the light emitting diversity is increased on the condition of not adding other light sources.

Abstract: A lighting device includes a housing having first and second housing parts to define a first receiving space there between, and a third housing part arranged on the second housing part to define an open gap. The third housing part defines with the second housing part a second receiving space in which a first light conductor is arranged. A plastic film strip is arranged between edges of the first and second housing parts and is transparent for light emitted by the first light conductor, with the emitted light being projected into one end face of the film strip and extracted from another end face of the film strip. The film strip is sized to terminate flush with the first and second housing parts. Arranged in the second receiving space is a second light conductor which emits light through the gap.

Abstract: Optical constructions use a low index of refraction layer disposed between a low absorption layer and a high absorption layer to increase confinement of light to the low absorption region of the optical constructions. Low index layers can be used in optical constructions that have multi-tiered light confinement. In these constructions, a first tier of reflection is provided when light is reflected at the surface of a low index optical film which is disposed directly or indirectly on a light guide. A second tier of reflection occurs at the surface of a light redirecting film having appropriately oriented refractive structures.

Abstract: A backlight module is provided and includes a back plate, a light guide plate, a light source, a frame, at least one first positioning member and at least one second positioning member. The back plate includes at least one first limiting hole. The light guide plate is disposed on the back plate. The light source is disposed on the back plate and located at one side of the light guide plate. The frame is disposed on the back plate and includes at least one second limiting hole. The first positioning member is inserted into the first limiting hole and the second limiting hole along a first direction and includes a positioning portion. The second positioning member is inserted into the frame along a second direction and fixed in the positioning portion. The first direction is different from the second direction.

Abstract: A backlight module includes a light guide plate and a supporting assembly. The light guide plate has a light input surface, a light output surface and a back surface. The supporting assembly includes a supporting frame and a light source. The supporting frame includes a first component and a second component. The first component includes a plurality of first reflective teeth. The second component includes a plurality of second reflective teeth. The light source includes an emitting surface. For light emitted from the emitting surface, a first portion travels toward the light input surface directly, a second portion is reflected toward the light input surface by the first reflective teeth, and a third portion is reflected toward the light input surface by the second reflective teeth.

Abstract: A display device and a backlight module thereof are provided. The display device comprises a backlight module and a panel. The backlight module includes a bottom frame, a light guide, an optical film structure and a top frame. The light guide is disposed above the bottom frame. The optical film structure is disposed above the light guide. The top frame covers a periphery of the optical film structure and covers a lateral side of the bottom frame. The panel is disposed above the top frame.

Abstract: A lighting assembly includes an edge-lit light guide and a light redirecting member. Light extracting elements at the light guide extract light from the light guide as intermediate light. Light redirecting elements at the light redirecting film are configured to redirect the intermediate light received from the light guide to illuminate a target surface in accordance with a defined illumination profile.

Abstract: A side-light type backlight module includes an optical film, a front frame, a reflective plate, a back cover, and a light source panel. The front frame includes a step-shaped receiving portion configured to receive the optical film. The light source panel is positioned at one side of the back cover. The reflective plate and the front frame are received in the back cover. A plurality of through holes is defined in the reflective plate. The reflective plate and the back cover cooperatively define a chamber.

Abstract: Provided are an illumination device capable of improving the uniformity in brightness of the illumination light, and a display device using the same. An illumination device is provided with: a plurality of light sources arranged in a row in one direction; and a light guide plate which has, along a side edge face, a light receiving face facing the light source, guides light entering through the light receiving face, and outputs illumination light from a light emitting surface disposed on the front surface; the light guide plate having a plurality of prisms and a plurality of prisms provided in an indented manner on the front or rear surface and arranged in a row along the longitudinal direction of the light receiving face; the prisms being formed spanning between the light receiving face and the opposing face opposite the light receiving face; and the prisms being formed, between adjacent prisms, deeper than the prisms within a predetermined range in the vicinity of the light receiving face.

Abstract: A backlight unit includes a light source providing a blue light; a light guide plate of glass at a side of the light source; an optical sheet on the light guide plate; a reflective sheet under the light guide plate; and an optic change part including a yellow fluorescent material, wherein the blue light is changed into a white light by the optical change part.

Abstract: A lighting module comprises a light guide plate including a predetermined pattern; a case covering both sides of the light guide plate; and a light source which is disposed in the case and is configured to emit light to the both sides of the light guide plate, wherein the light guide plate is configured to emit the light from the light source through a top surface and a bottom surface of light guide plate, and wherein the lighting module is configured to emit first light upward from the top surface of the light guide plate, and second light downward from the bottom surface of the light guide plate.

Abstract: Provided is a light-emitting element having high luminance and high directivity and emitting light in a controlled polarization state. The light-emitting element comprises substrate 3 and light emitting part 10 disposed on substrate 3 for emitting light in which light intensity of a polarization component in first direction x parallel to substrate 3 is higher than light intensities of polarization components in other directions. Light emitting part 10 includes active layer 12 for generating light and a plurality of structural bodies 14a disposed on a light-emitting side of light emitting part 10 with respect to active layer 12 and arrayed two-dimensionally along a surface substantially parallel to active layer 12. Each of structural bodies 14a has width w1 along first direction x and width w2 along second direction y perpendicular to first direction x, width w1 along first direction x and width w2 along second direction y being different from each other in a cross section parallel to active layer 12.

Abstract: Provided is a light-emitting unit that includes: a light-guide section having a light entering surface; and a plurality of light sources opposed to the light entering surface of the light-guide section and arrayed in a first direction, and each having an anisotropy in emission intensity. A pattern shape of light applied from any of the light sources to the light entering surface has a shape anisotropy, and the light sources are each disposed to allow a longitudinal direction of the pattern shape to be inclined relative to the first direction.

Abstract: A backlight module includes a bottom frame, a light guide plate, a lighting bar and a supporting bar. The light guide plate is disposed on the bottom plate of the bottom frame. The lighting elements are arranged in a row on a setting surface of the flexible circuit board of the lighting bar. Two parts of the setting surface at two sides of the row of lighting elements are a first region and a second region, respectively. The bottom of the supporting bar is attached to the bottom plate. The top of the supporting bar is attached to the first region. A portion of the light emitting surface of the light guide plate adjacent to the light incident side-surface of the light guide plate is attached to the second region. The lighting elements are between the supporting bar and the light incident side-surface.

Abstract: The present invention provides a backlight module and a liquid crystal display device using the backlight module. The backlight module includes: a backplane (2), a light guide plate (4) arranged in the backplane (2), a backlight source (6) arranged in the backplane (2), an optic film assembly (8) arranged above the light guide plate (4), and a reflection plate (9) arranged between the backplane (2) and the light guide plate (4). The backlight source (6) includes a PCB (62) and a plurality of LED lights (64) mounted on and electrically connected to the PCB (62). The backplane (2) includes a bottom plate (22) and a plurality of side plates (24) perpendicularly connected to the bottom plate (22). The bottom plate (22) of the backplane (2) includes a snap-engagement structure (220) formed thereon. The PCB (62) is snap-fit into and retained by the snap-engagement structure (220). The reflection plate (9) is directly positioned on and supported by the PCB (62).

Abstract: The present invention provides a backlight module and a liquid crystal display device using the backlight module. The backlight module includes: a backplane (2), a light guide plate (4) arranged in the backplane (2), a backlight source (6) arranged in the backplane (2), and an optic film assembly (8) arranged on the light guide plate (4). The backplane (2) comprises a bottom plate (22) and a plurality of side plates (24) perpendicularly connected to the bottom plate (22). The bottom plate (22) has a surface facing the light guide plate (4) and defining a curved surface (222) and the curved surface (222) comprises a curved reflection surface (224) formed thereon.

Abstract: A backlight module includes a frame, a light source, a light guide plate, a wavelength conversion layer, and an optical film group. The light source is disposed in the frame. The light guide plate is disposed in the frame, and the light guide plate includes a light emitting surface, a light incident surface, and at least one side wall. The light source is disposed corresponding to the light incident surface. The side wall connects the light emitting surface and the light incident surface. The wavelength conversion layer is at least disposed on the side wall. The wavelength conversion layer is configured for converting light provided by the light source into white color. The optical film group is disposed on the light emitting surface of the light guide plate.

Abstract: Disclosed teem are display systems comprising light-emitting, diodes (LEDs), suitably blue light LEDs, which demonstrate increased optical power output. In embodiments, the display systems include compositions comprising phosphors, including luminescent nanocrystals.

Abstract: Disclosed is a lighting device which comprises: an optical member comprising a protruding optical pattern forming a gap with an adjacent layer; at least one light emitting unit inserted into the optical member; and a resin layer formed on the optical member and the at least one light emitting unit, whereby it is possible to obtain an effect that the shapes of light change depending on the viewing angle when viewing the light source by producing various protruding optical patterns, an effect that the whole thickness can be reduced, and an effect that the degree of design freedom can be enhanced when designing products thanks to an enhanced flexibility.